Approximately how many cells are found in the body of an adult human?

The term "Protoplasm" was coined by whom?

Unicellular organisms are capable of:
$(i)$ Having an independent life.
$(ii)$ Organ development.
$(iii)$ Performing metabolic activities for life.
$(iv)$ Tissue constitution.

The properties of tissues are related to which of the following?

"New cells arise from pre-existing cells" - this statement was given by .....

The cell theory proposed by $Schleiden$ and $Schwann$ failed to explain how new cells are formed. Who modified this theory and gave it its final shape?